Related Experiment Video
Updated: Jul 18, 2026

08:43
Investigating Intestinal Inflammation in DSS-induced Model of IBD
Published on: February 1, 2012
[Pathophysiology of inflammatory bowel disease]
1Abteilung für Gastroenterologie, Universitätsspital Basel, Basel.
Therapeutische Umschau. Revue Therapeutique
|April 16, 2003
Summary
Inflammatory bowel diseases (IBDs), Crohn's disease (CD) and ulcerative colitis (UC), arise from genetic, immune, and environmental interactions. Smoking significantly impacts CD and UC occurrence and outcomes.
Area of Science:
- Gastroenterology and Immunology
- Genetics and Environmental Health
Context:
- Crohn's disease (CD) and ulcerative colitis (UC) are chronic inflammatory bowel diseases (IBDs) with unknown etiology.
- Current research suggests a complex interplay of genetic predisposition, immune system dysregulation, and environmental triggers in IBD pathogenesis.
- Inflammation in UC is confined to the colonic mucosa, while CD can affect the entire bowel wall, indicating distinct disease mechanisms.
Purpose:
- To elucidate the multifactorial origins of IBD, including genetic influences, immune responses, and environmental factors.
- To investigate the role of genetic background in IBD susceptibility and clinical course, as evidenced by familial clustering and twin studies.
- To identify potential triggers of chronic immune stimulation in IBD, such as nutritional antigens, self-antigens, gut microbiota components, or specific bacteria like mycobacteria.
Summary:
- IBD pathogenesis involves genetic, immunologic, and environmental interactions, with distinct inflammatory patterns in CD and UC.
- Genetic factors significantly influence IBD phenotype and disease progression, supported by population and family studies.
- Potential triggers for chronic immune stimulation include antigens, gut flora, and bacterial components, leading to cytokine dysbalance and inflammation.
Impact:
- Understanding the genetic and environmental interplay is crucial for developing targeted therapies for IBD.
- Identifying specific triggers and immune mediators can lead to novel diagnostic and therapeutic strategies for CD and UC.
- Recognizing the significant impact of smoking on IBD occurrence and outcomes highlights the importance of lifestyle modifications.
Related Concept Videos
Inflammatory Bowel Disease I: Ulcerative Colitis
Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory Bowel Disease II: Crohn's Disease
Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
Inflammatory Bowel Disease I: Introduction
Inflammatory bowel disease is a group of chronic disorders marked by recurrent inflammation of the gastrointestinal tract due to an abnormal immune response against gut microflora. This leads to tissue damage. The two main forms are Crohn’s disease and ulcerative colitis.Crohn’s DiseaseCrohn’s disease is a relapsing inflammatory disorder that can affect any part of the GI tract, from the mouth to the anus. It involves all layers of the bowel wall (transmural) and shows “skip lesions” in which...
Inflammatory Bowel Disease II: Ulcerative Colitis
Ulcerative colitis is a chronic inflammatory disorder of the colon characterized by continuous mucosal inflammation that typically begins in the rectum and extends proximally in a uniform pattern. Its pathogenesis involves a complex interplay of genetic predisposition, immune dysregulation, and environmental influences. These factors converge to impair the colon’s epithelial defenses and promote an exaggerated inflammatory response against luminal contents.Breakdown of the Mucosal BarrierA...
Inflammatory Bowel Disease III: Crohn's Disease
Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
Inflammatory Bowel Disease IV: Clinical Manifestations
Inflammatory bowel disease (IBD) encompasses two major chronic disorders—ulcerative colitis and Crohn’s disease—each characterized by relapsing episodes of gastrointestinal inflammation. Although they share certain clinical features, their patterns of involvement and manifestations differ in ways that aid diagnosis and guide management.Ulcerative ColitisUlcerative colitis is limited to the colon and rectum and involves continuous inflammation of the mucosal layer. The disease course is marked...

